Process of collecting glass by suction



Feb. 1, 1927. S 1,615,886

PROCESS, 0F COLLECTING GLASS BY SUCTIONv E. RolRANT Filed July 9, 1926 i Paar-.aa Feb. 1,1927.

UNITED .STATE-s PATENT ori-ica marmi norm'rfor raars, FRANCE, Assrciixronl 'ro socrn'rn ANONYME DEruDEs ET DE coNsTnUcTxoNs DAPPABEILS MEcANIQUEs roUn LA VERRERIE, or Panis,

FRANCE.

PROCESSOF COLLECTING GLASS BY SUCTION.

Application ill-ed July 9, 1926, Serial No. 121,408, and in France March 3, 1926.

In, certain machines for manufacturing bottles it has already been proposed Vto cause parison moulds to penetrate into the interior of a furnace containing the glass in fusion, which moulds draw therein by suction lthe glass' in a zone near to the interior wall of this furnace.

.In this rocess the parison mould constantly suc s up the glass in the same spot,

then withdraws towards the exterior of the furnace carrying with yit a column of glass' which adheres to its base and which,'after having been cut off, falls' back between the point of suction and the interior wall of 15. the furnace. The glass thus carried, -already cooled by metallic contact, is then rejected into a zone less hot where it has ditliculty in acquiring again a suitable temperature. f

In order to remed different' means have en em loyed which cause other diiiiculties or .w 'ch do not compl entirely with technical conditions desira le in a process comprising the sucj,l

tion of glass into a parison'mould.

` vIt has been Lsuggested to draw the glass in different parts of the furnace by successive movements of the parison moulds. v

In addition to the mechanical diiculties which this method involves, it is cer-` tain that at each -spot where the drawing takes place there is found glass having-a different temperature, which causes diiiculties in the' manufacture.

It has likewise been suggested in other e machines causing a rectilinear penetration of the firison mould into the furnace', to cut oil t e glass carried by the mould after suction and to endeavour to project it lat` 40 erally withv respect to the direction of penetration, butapart from the comphcation which thereby results for the cutting o i ap `\aratus, the rejection of'thefglass does 'not ta :e lace sutlicientlyfar on order to avoid all disturbance of temperature of the glass at the suction oint.

In addition the* g ass cut olf is not,rejected into a hotter zone than 'the zone where it, is sucked up, and cannot there.. fore be reheated sufficiently. rapidly.

It is necessary to state that in order to obj tain a. perfect manufacture, the parison this inconvenience,'-

.the suction mould ando mould ought a be filled with glass laying a regular fluidity, that is to say, in which all the parts are at'the same temperature. Now the zone of suction of theparis'on mould is not limited to one point or to the small surface which corresponds to the cavity of the parison mould, it .extends equally c ircumferentially aroundthis cavity and over a certain distance.

As in afurnace the temperature of the glass increases rapidly fromv the part immediately next to the wall towards the interior, it follows that the suction mould absorbs glass which is hotter on the-side of the interior of the furnace than on the side at the exterior. The rejection of glass cut 0Hl to the right or to ,the left or to the rear of' the mould accentuates the differences of temperature of the glass in the zonewhere 1t is gathered; it fellows that the parisons obtained are different' in temperature and that the object manufactured presents defects.r

The present invention has for its object a process which has for its purpose to prevent the various inconveniences indicated,

and to render the temperature of the glass glass carried by the base of) the suction mould after suction.

This process consists in its path in a direction towards the interior of the furnace, to cut off the glass atthe end of this new path of penetration and in the direction of the travel of the glass carried by the base of the mould, then to operate the withdrawal of this mould to the exterior of the furnace.

This process has the result of carryin the glass adhering to the base of the mould towards the interior of the furnace in such a manner that after the cutting off, the lass cooled by the contact ofthe mould an the cutting off, is rejected towards the interior,

'The annexed drawing given by way ofA example onl represents in va manner which t the movement of is entirely Y iagrammatic fthe blade. f

rinciple, after s -the suction mould has edected its suction and s has been raised above t-he surface yof the glass, to cause this suction mould to continue The suction Imouldffa is carried by an Iarmvv g The blade e is carried by an arm f 'capable of receiving a longitudinal movement. The operation is as follows:

The arm b moves in the direction of the arrow 1 and thus causes the mould a to penetrate into the interior of the furnace 0. 1t is lowered carrying the base of the suction 'mould into contact with the surface g of the smelted glass. The suction is then produced and the mould fills with glass. It is raised and continues to advance towards the interior of the furnace in the direction of the arrow l, drawing a column h of glass adhering to its base. When it arrives in the posi- Vtion indicated in dot and dash lines, the

blade e penetrates into the furnace, passes under the mould and cuts the glass which .falls at h1.

The mould a and the blade e thenmove'in the direction of the arrow 2 and leave the furnace.

It is therefore seen that the column h of lglass which is carried, partly cooled, falls into a hotter zone than that where the mould arrived to collect the glass, whichgtends to regulate the temperature in the whole of the collecting zone, because the glass which is less hot which is between the point of collec'- tion and the wall of the furnace is not inuenced, whilst the hotter glass beyond the point of suction is cooled by the portion of lthe suction mould presents a favourable inclination to the cut of the blade, by reason ot'v the fact that the column of glass makes y an acute angle with respect to the direction of the cut. It is evident that this method of attack is particularly advanta es inorder to effect under good conditions t e severance 0f the glass`which is atthis moment in a plastic state.

It has also to -be noted that the cutting operated in the direction of the further movement of the p'arison mould, assists in a certain measure in throwing the column of glass towards the interior of the furnace. y

The arrangements above described are' only given by way of example; the forms,v dimensions, materials employed and all theV details of construction, and putting into operation of the process may be varied in all cases without changing the principle of the invention.

Claim A process of collecting glass by suction by means .of a suction mould which penetrates into the furnace, characterized by the'rpfact that this mould, after having effected its suc-v tion, continues its movement towards 'the interior of the furnace; the blade effecting the cuttin off at the end of this supplementary trave so that the column cut off falls back towards the side of the interior of thel `furnace.

The foregoing specification of my process of collecting glass by suction,s1gned by methis 28th day of June, 1926..

EMILE ROIRANT. 

